starnge dependencies in makefile

[Shai Ayal]

Whay is that if I do a make -k and then change src/graphics.h.in and then do
cd src && make graphics.o

I get a long line of other things before graphics is compiled:


making op-scm-m.d from ./OPERATORS/op-scm-m.cc
making op-scm-cs.d from ./OPERATORS/op-scm-cs.cc
making op-scm-cm.d from ./OPERATORS/op-scm-cm.cc
making op-sbm-sbm.d from ./OPERATORS/op-sbm-sbm.cc
making op-sbm-bm.d from ./OPERATORS/op-sbm-bm.cc
making op-sbm-b.d from ./OPERATORS/op-sbm-b.cc
....

and many more